I am a straight male, and, yes, I shave my pubic hair. (Or, at least trim down to 1/8 inch or less.) I started doing it because I have found that it is more comfortable for a girl to go down on you. (Just like us guys don’t fully enjoy a mouth full of the short ‘n’ curlies!) It’s just polite! Also, one’s member tends to look a lot larger, which can be beneficial if you tend to be insecure. Furthermore, you don’t leave stray ones floating around your bedroom! And, last but not least, my fiancee likes it.